Critical appraisal of respirometric methods for metal inhibition on activated sludge

E. Ubay Cokgor; S. Ozdemir; O. Karahan; G. Insel; D. Orhon

doi:10.1016/j.jhazmat.2006.06.038

Critical appraisal of respirometric methods for metal inhibition on activated sludge

E. Ubay Cokgor^*
, S. Ozdemir
, O. Karahan
, G. Insel
, D. Orhon

^*Bu çalışma için yazışmadan sorumlu yazar

Çevre Mühendisliği Bölümü

Istanbul Technical University

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

48 Atıf (Scopus)

Özet

This paper evaluates the merit of oxygen uptake rate measurements for the assessment of metal inhibition on activated sludge. For this purpose, experiments are conducted to calculate EC₅₀ levels of nickel and hexavalent chromium using the ISO 8192 procedure, yielding results that are highly variable and difficult to correlate, depending on the type of substrate and the initial food to microorganism ratio. Similar experiments based on continuous respirometric measurements to give the entire oxygen uptake rate profile provide a much better insight on the impact of inhibition on different biochemical processes taking place in the reactor. The results indicate that percent reduction of the amount of dissolved oxygen utilized after an appropriate reaction time is a much better index for the assessment of the inhibitory effects.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	332-339
Sayfa sayısı	8
Dergi	Journal of Hazardous Materials
Hacim	139
Basın numarası	2
DOI'lar	https://doi.org/10.1016/j.jhazmat.2006.06.038
Yayın durumu	Yayınlandı - 10 Oca 2007

Finansman

This study was supported by the Scientific and Technical Research Council of Turkey (TUBITAK) under Project no. CAYDAG 102Y071. This study was also conducted as part of the sponsored research activities of Environmental Biotechnology Centre of The Scientific and Technical Research Council of Turkey.

Finansörler	Finansör numarası
TUBITAK	CAYDAG 102Y071
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

BM SKH

Bu sonuç, aşağıdaki Sürdürülebilir Kalkınma Hedefine/Hedeflerine katkıda bulunur

SKH 6 Temiz Su ve Sanitasyon
SKH 7 Erişilebilir ve Temiz Enerji
SKH 9 Sanayi, Yenilikçilik ve Altyapı
SKH 12 Sorumlu Üretim ve Tüketim

Belgeye Erişim

10.1016/j.jhazmat.2006.06.038

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Critical appraisal of respirometric methods for metal inhibition on activated sludge",

abstract = "This paper evaluates the merit of oxygen uptake rate measurements for the assessment of metal inhibition on activated sludge. For this purpose, experiments are conducted to calculate EC50 levels of nickel and hexavalent chromium using the ISO 8192 procedure, yielding results that are highly variable and difficult to correlate, depending on the type of substrate and the initial food to microorganism ratio. Similar experiments based on continuous respirometric measurements to give the entire oxygen uptake rate profile provide a much better insight on the impact of inhibition on different biochemical processes taking place in the reactor. The results indicate that percent reduction of the amount of dissolved oxygen utilized after an appropriate reaction time is a much better index for the assessment of the inhibitory effects.",

keywords = "Activated sludge, Heavy metals, Inhibition, Oxygen uptake rate, Respirometry",

author = "Cokgor, \{E. Ubay\} and S. Ozdemir and O. Karahan and G. Insel and D. Orhon",

year = "2007",

month = jan,

day = "10",

doi = "10.1016/j.jhazmat.2006.06.038",

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TY - JOUR

T1 - Critical appraisal of respirometric methods for metal inhibition on activated sludge

AU - Cokgor, E. Ubay

AU - Ozdemir, S.

AU - Karahan, O.

AU - Insel, G.

AU - Orhon, D.

PY - 2007/1/10

Y1 - 2007/1/10

N2 - This paper evaluates the merit of oxygen uptake rate measurements for the assessment of metal inhibition on activated sludge. For this purpose, experiments are conducted to calculate EC50 levels of nickel and hexavalent chromium using the ISO 8192 procedure, yielding results that are highly variable and difficult to correlate, depending on the type of substrate and the initial food to microorganism ratio. Similar experiments based on continuous respirometric measurements to give the entire oxygen uptake rate profile provide a much better insight on the impact of inhibition on different biochemical processes taking place in the reactor. The results indicate that percent reduction of the amount of dissolved oxygen utilized after an appropriate reaction time is a much better index for the assessment of the inhibitory effects.

AB - This paper evaluates the merit of oxygen uptake rate measurements for the assessment of metal inhibition on activated sludge. For this purpose, experiments are conducted to calculate EC50 levels of nickel and hexavalent chromium using the ISO 8192 procedure, yielding results that are highly variable and difficult to correlate, depending on the type of substrate and the initial food to microorganism ratio. Similar experiments based on continuous respirometric measurements to give the entire oxygen uptake rate profile provide a much better insight on the impact of inhibition on different biochemical processes taking place in the reactor. The results indicate that percent reduction of the amount of dissolved oxygen utilized after an appropriate reaction time is a much better index for the assessment of the inhibitory effects.

KW - Activated sludge

KW - Heavy metals

KW - Inhibition

KW - Oxygen uptake rate

KW - Respirometry

UR - https://www.scopus.com/pages/publications/33845438662

U2 - 10.1016/j.jhazmat.2006.06.038

DO - 10.1016/j.jhazmat.2006.06.038

M3 - Article

C2 - 16870334

AN - SCOPUS:33845438662

SN - 0304-3894

VL - 139

SP - 332

EP - 339

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 2

ER -

Critical appraisal of respirometric methods for metal inhibition on activated sludge

Özet

Finansman

BM SKH

Belgeye Erişim

Diğer Dosyalar ve Linkler

Parmak izi

Alıntı Yap